Rotary engine.



Ptented m. 5, I899.

C. E. -FDRSYTH.

ROTARY ENGINE.

(Application filed Mar. 13, 1899,)

2 Sheets8heet I.

(No Model.)

HTTEET.

INVENTDIT.

CHHRLES E FOR'QYTH 7x 7 yaw Km v Patented Dec. 5, 1899. C. E. FORSYTH.

ROTARY ENGINE.

(Application filed Mar. 13, 1899.)

(No Model.)

2 Sheets-Sheet 2.

TNv-Emrnqz CHHRLES E FoRsYTH &4 .7?

ilNiih STATES PATENT Fries.

CHARLES E. FORSYTH, OF AKRON, OHIO, ASSIGNOR OF THREE-FOURTHS TO PHILIP F. HAAS, SMITH G. TIBBS, AND GEORGE HARTMAN, OF SAME PLACE.

ROTARY ENGINE.

SPECIFICATION forming part of Letters Patent No. 638,570, dated December 5, 1899.

Application filed March 13, 1899. Serial No. 708,803. (No model.)

To all whom it may concern.-

Be it known that 1, CHARLES E. FORSYTH, a citizen of the United States, residing at Akron, in the county of Summit and State of Ohio, have invented certain new and useful Improvements in Rotary Engines; and I do declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to rotary engines; and the invention consists in the construction and combination of parts, substantially as shown and described, and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a cross-section of the engine in full elevation on line 1 1, Fig. 4. Fig. 2 is a cross-section in full elevation on line 2 2, Fig. 4. Fig. 3 is a cross-sectional elevation on line 3 8, Fig. 4. Fig. 4 is a cross-section on line 4 4, Fig. 3, the same being a section onthe axis of the engine. Fig. 5 is a perspective view of the inher side of the side of the casing which carries the hub with the inlet and exhaust ports, cross-sections of which are seen in Figs. 1 and 2.

A represents what may be termed the body or drum of the casing, the same being fashioned, essentially, like a section of a cylinder and having the base a, on which the engine rests, integral therewith.

B is the front side of the casing, and O is the rear side formed in separate pieces and having each features peculiar to themselves, as will now appear. Thus the side B has an integral hub 17 centrally on its inner side, with athrough-opening substantially centrally thereof, in which connection is made by the inlet-pipe h. The exhaust likewise is through this hub and connects with the exhaustpipe 6 D is the motor-wheel complete in itself and revolving bodily in the main casing and in this instance provided with an integral spindle or shaft f, supported in the bearing 0 in the side G of the casing. The wheel D for convenience in construction is made in three difierent parts, consisting of the body or central part d and the two sides 61 and d screwed or bolted together into one, and the central part has a series of substantially half-moon cavities or chambers cast therein and numbered 1, 2, 3, and 4. These chambers are ar ranged, as shown, at equal distances from the center and from each other and all alike in all particulars, so that to understand clearly the use and operation of one with its associ+ ated mechanism is to understand all. Assuming, then, that the wheel D is in position for work, as in Fig. 4, it rests on its own shaftf and is sleeved over the webbed hub b of the main casing, and from this huh I) there arev planetary gears G, meshing therewith and operating as hereinafter described.

In each half-moon chamber I place a steamactuated vane or blade 71., aifixed to a shaft H, which extends through the side 01 of the wheel into the open space between said wheel and the side of the inclosing casing and on which is fixed an arm h, having a radius equal substantially to the radius of the blade h, though it may be something greater or less than this. Each arm 72, is connected by a lin 1177. with asubstantially similar but shorter arm m on a shaft M, which passes entirely through the wheel into the open space on its opposite side and carries one of the planetary gears G, which meshes with the stationary gear E. The several gears G constitute the planetary system above referred to, revolv ing together and uniformly around wheel E as their center and all revolving together and getting their hold or leverage for rotation on said wheel E, which is stationary. Now to understand the operation suppose the steam to be entering chamber No. 1 through the port 5 and forcing the blade it forward in the direction shown. As this occurs the power thus exerted is communicated through shaft H to its arm h and through link h lever m, and shaft M and its gear G to rotative engagement with gear E, and thus starting the wheel D in its working movement. Having made this start, steam continues to enter chamber No. 1 until port 5 is past the wide inlet area It in the fixed hub 17, when it is cut off and the steam is pocketed until it reaches the outlet area 6 of the exhaust-duct on the opposite side of the hub. Meanwhile, however, as soon as one steam-chamber passes out of communication with the inlet area 7; the next steam-chambersay No. 2comes into communication with said area, and then No. 3, andso on successively and indefinitely, making round after round and with a like action in all the chambers. In these operations the blades h traverse their chamber more or less completely from side to side, depending somewhat on the relative lengths of arms h and m and link h, and in this instance the arms m are about three-fourths the length of arms h; but the arms on. always describe a complete circle around their axis and the gears G continue to revolve, first, under the impelling force of their own blades h and thereafter by reason of the force of the other blades and their being geared with the sta- In these movements tionary gear-wheel E. the several arms 7L, links 702, and arms m assume successively the positions outlined in Fig. 2, and the reverse movement of each blade begins as its chamber reaches the exhaust area 6 in the hub Z), Figs. 2 and 5, and as has occurred in the third position at the bottom in Fig. 2. Then as the fourth and last position of the movement is reached the blade comes back to starting-place, as seen clearly in chamber at, Fig. 1. In this way I am enabled to get a direct and advantageous action of the steam on the four blades successively and in a manner which in,the aggregate is equal to a continuous pressure on one of them, or the same as if I could follow one blade around on a complete circle with a full and undiminished head of steam all the way and continuously. That of course is not practicable, but this is, and its effect is such as to develop an engine wherein the steam is utilized and applied in the most effective manner, and an engine of extraordinary efficiency is obtained.

What I claim is- 1. In rotary engines, an outer casing, a motor-shaft and a wheel fixed thereon having a series of steam chambers walled inupon all sides and a single inlet and outlet for each chamber, swinging blades in said chambers, and gears and lever-and-link mechanism to convey the power from the blades to the said wheel and shaft, substantially as described.

2. In rotary engines, a motor-wheel having substantially half-moon chambers at intervals an equal distance from its center, an oscillating blade in each chamber, a shaft for each blade, parallel shafts operatively connected with the blade-shafts, and means to convey the power thence to the motor-wheel, substantially as described.

3. The main casing, a motor-wheel inclosed therein having a separately-formed central portion with a succession of steam-ehambers between at regular intervals and extending from side to side thereof, a blade and a shaft therefor in each chamber extending out through one side of said wheel, a parallel shaft connected with each of said blade-shafts by arm-and-link mechanism, and means to transmit the power from said parallel shafts to drive said motor-wheel, substantially as described.

4. In a rotary engine, the main casing, a motor-wheel in said casing and a stationary gear-wheel between said wheel and casing, a planetary system of gears on the outside of said motor-wheel meshing with said stationary gear, a series of rock-shafts in said wheel having arms on the opposite side from the said planetary gears, and vibratory blades in said motor-wheel havinga shaft-and-link connection with said rock-shafts, substantially as described.

5. The casing having an inwardly-project ing hub with inlet and exhaust ports through the same, and a motor-wheel sleeved over said hub having a series of steam-chambers in open communication with the said ports, swinging blades in said chambers and means to convey power from said blades to said motor-wheel, said means comprising a series of parallel shafts having link connection at one end with the shafts of the said blades and power connections with the opposite ends of the said parallel shafts to drive the motorwheel, substantially as described.

6. The main casing having an inwardly-extending hub provided with inlet and exhaust ports and a fixed gear mounted on the other side of the casing from said ports, in combination with a motor-wheel sleeved over said hub and having steam-chambers open to the ports through said hub, vibratory blades in said chambers, a series of planetary gears carried bysaid wheel and meshing with said fixed gear, and mechanism connecting said blades and series of gears comprising a series of shafts and links, substantially as described.

7. In a rotary engine, a motor-wheel having a series of steam-chambers, a blade for each chamber and a shaft for each blade having an arm at one end, a parallel shaft for each blade-shaft having an arm, and a link connecting the arm of the blade-shaft with the arm of the parallel shaft, and gears from said parallel shafts to communicate the power to the power-shaft, substantially as described.

8. The motor-wheel having a series of chambers of substantially half-moon form in cross section, a blade adapted to oscillate in each chamber and a shaft for each blade extending through the side of the wheel at one end,

with the said stationary gear, substantially as described. IO in combination With a parallel shaft for each i Witness my hand to the foregoing specifiblade-shaft and a link connecting the come cation this 9th day of March, 1899. sponding ends of said shafts, a stationary CHARLES E. FORSYTH.

gear about the axis of the said motor-wheel XVitnesses: 0n the side opposite said link connections, BERTHA A, \VILSON, and a gear on each parallel shaft meshing O. XVISE. 

